tip the balance
US /tɪp ðə ˈbæl.əns/
UK /tɪp ðə ˈbæl.əns/

1.
扭轉局面, 改變平衡, 起決定作用
to cause a situation to change, especially by giving a slight advantage to one side
:
•
His late goal tipped the balance in favor of our team.
他遲來的進球扭轉了局面,使我們隊佔據優勢。
•
A single vote could tip the balance in the election.
一票就能改變選舉的結果。